August schmidt



' (No Model.)

A. SCHMIDT. WINDUW FRAME.

Patented Nov. 10,1891.

A TTOHNEYS UNITED STATES PATENT OFFICE.

AUGUST SCHMIDT, OF NEV YORK, N. Y.

WIN DOW-FRAM E.

SPECIFICATION forming part lof Letters Patent No. 462,998, dated November 10, 1891.

Application filed April ll, 1891.

To all whom it may concern.:

Be it known that I, AUGUST SCHMIDT, of New York city, in the county'and State of New York, have invented a new and Improved Window-Frame, of which the following is a full, clear, and exact description.

My invention relates to an improvement in window-frames, and has for its object to so construct the slideways of the sashes that when the sashes are closed they will be firmly wedged in place, so that drafts will be effectually prevented from entering a room and the sashes will be prevented from rattling.

A further object of the invention is to so construct the sash-slideways that after the lower sash has been raised a slight distance and the upper sash lowered a slight distance the sashes may be further manipulated without. binding themselves in their slideways.

The invention consists in the novel coustruction and combination of the several parts, as will be hereinafter fully set forth,

the sashes removed therefrom, and Fig. 4 is a horizontal section taken on the line 4 4t of Fig. 1.

The frame is of the ordinary construction at all points except in the formation of the slideway 10 of the lower sash and the slideway 11 of the upper sash. The space de voted to these two slideways is provided with the usual parting-rail 12; but the said parting-rail, instead of extending vertically from top to bottom of the frame, is placed diagonally, as is best illustrated in Fig. 3, and the diagonal parting-rail is so located that the upper portion of the slideway 11 for the upper sash A is of less width than the upper Serial No. 388,434. (No model.)

portion of the slideway l0, accommodating' the lower sash B, and at the bottom of the frame the slideway 10 is narrower than the slideway 11. The width of the slideway 1l at its upper end approaches as near as possible the thickness of the upper rail of the upper sash, and the width of the slideway 10 at :its lower end corresponds as near as possible to the thickness of the lower rail of the lower sash. Itwill thus be observed that the slideways 11 and 12 taper throughout their length iu opposite directions. In the wide portion of each slideway l1 and lO a spring 13 is placed in a recess 14, produced in the partingrail. The spring belonging to the slideway 1l is located near the lower portion of said slideway, and the spring in the slideway 10 is located near the upper portion thereof, as is shown in Figs. 1 and 3. The lower rail 15 of the upper sash A and the upper rail 16 of the lower sash B are made of sufiicient width to closely engage when the sashes are in their closed position, as is shown in Fig. 2. When the sashes are closed, the upper end of the upper sash and the lower end of the lower sash are firmly wedgedin the contracted ends of their respective slideways and are so tightly held to place that they bind in a manner to prevent the sash from rattling and the wind from entering the room, as the tapfer of the sash-slideways ll and l0 is very gradual and the difference in width between their upperand lower ends is but very slight, the difference in width being suflcient only to permit the sashes when carried in direction of the wider portions of their slideways to move freely without binding, thereby rendering the act of raising and lowering the window-sashes comparatively easy. The springs 13 are placed in the slideways in order that the sashes shall be held in any desired position within the wider portions of the slideways and not exert tension at all times upon the sash-cords.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. A window-frame provided with partingrails extending diagonally from top to bottom, producing wedge-shaped slideways for the sashes, one of said slideways being Wide Ways, and springs located in the side Wall of at the top and narrow at the bottom and the each slideway near the Wider end thereof, a other narrow at; the top and Wide at the botand for the purpose specified.

tom, as and for the purpose specified. AUGUSTl SCHMIDT.

2. A Window-frame provided with partng- Witnesses: rails extending diagonally from top to bot- H. A. BUCHHOLZ,

tom, forming, essentially, Wedge-shaped slide- JOSEPH ZIEGELMEIER. 

